CELL RESPIRATION
LabQuest Activity 11B
Cell respiration refers to the process of converting the
chemical energy of glucose into a form usable by organisms. Glucose
may be oxidized (broken down) completely if sufficient oxygen is
available as shown in the following reaction:
C6H12O6 + 6O2
 6H2O + 6CO2 + energy
LEARNING TARGETS:
In this experiment you will…
Use a CO2 Gas Sensor to measure concentrations of carbon
dioxide during respiration.
Study the effect of temperature on cell respiration rate.
Compare the rates of cell respiration in germinating and
non-germinating peas.
GROUP
GERMINATED
Room Temp: 22C°
NONGERMINATED
GERMINATED
Cold Temp: 5C°
1
2.2554
-0.020484
1.0918
2
2.2888
-0.32181
1.2985
3
1.1222
0.10412
.79946
4
2.1409
-0.14064
2.0097
5
1.6875
0.46843
1.8017
6
1.8017
-0.13965
1.3562
7
1.3102
-0.12316
1.1584
8
4.9117
0.90211
1.6517
9
2.1267
0.12891
1.7643
10
1.5476
-0.11134
1.1678
TOTALS:
AVERAGE:
QUESTIONS
Please answer the following questions on a separate sheet of paper using
complete sentences. Attach as the last page of your lab report.
1. Did this lab activity provide evidence that cell
respiration occurred in peas? Explain how you know.
2. Compare the rate of respiration for germinating
pea seeds versus non-germinating pea seeds.
3. Why do germinated peas undergo cell respiration?
4. What is the effect of temperature on the rate of
cell respiration in peas?
5. How was the rate of respiration calculated?
(Hint: Think of the equation of a line.)
Express the rate of respiration for germinating
pea seeds to the nearest thousandths place.